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-rw-r--r--drivers/misc/pvpanic/pvpanic-mmio.c58
-rw-r--r--drivers/misc/pvpanic/pvpanic-pci.c58
-rw-r--r--drivers/misc/pvpanic/pvpanic.c76
-rw-r--r--drivers/misc/pvpanic/pvpanic.h10
4 files changed, 80 insertions, 122 deletions
diff --git a/drivers/misc/pvpanic/pvpanic-mmio.c b/drivers/misc/pvpanic/pvpanic-mmio.c
index eb97167c03fb..9715798acce3 100644
--- a/drivers/misc/pvpanic/pvpanic-mmio.c
+++ b/drivers/misc/pvpanic/pvpanic-mmio.c
@@ -24,52 +24,9 @@ MODULE_AUTHOR("Hu Tao <hutao@cn.fujitsu.com>");
MODULE_DESCRIPTION("pvpanic-mmio device driver");
MODULE_LICENSE("GPL");
-static ssize_t capability_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct pvpanic_instance *pi = dev_get_drvdata(dev);
-
- return sysfs_emit(buf, "%x\n", pi->capability);
-}
-static DEVICE_ATTR_RO(capability);
-
-static ssize_t events_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct pvpanic_instance *pi = dev_get_drvdata(dev);
-
- return sysfs_emit(buf, "%x\n", pi->events);
-}
-
-static ssize_t events_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct pvpanic_instance *pi = dev_get_drvdata(dev);
- unsigned int tmp;
- int err;
-
- err = kstrtouint(buf, 16, &tmp);
- if (err)
- return err;
-
- if ((tmp & pi->capability) != tmp)
- return -EINVAL;
-
- pi->events = tmp;
-
- return count;
-}
-static DEVICE_ATTR_RW(events);
-
-static struct attribute *pvpanic_mmio_dev_attrs[] = {
- &dev_attr_capability.attr,
- &dev_attr_events.attr,
- NULL
-};
-ATTRIBUTE_GROUPS(pvpanic_mmio_dev);
-
static int pvpanic_mmio_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
- struct pvpanic_instance *pi;
struct resource *res;
void __iomem *base;
@@ -92,18 +49,7 @@ static int pvpanic_mmio_probe(struct platform_device *pdev)
return -EINVAL;
}
- pi = devm_kmalloc(dev, sizeof(*pi), GFP_KERNEL);
- if (!pi)
- return -ENOMEM;
-
- pi->base = base;
- pi->capability = PVPANIC_PANICKED | PVPANIC_CRASH_LOADED;
-
- /* initialize capability by RDPT */
- pi->capability &= ioread8(base);
- pi->events = pi->capability;
-
- return devm_pvpanic_probe(dev, pi);
+ return devm_pvpanic_probe(dev, base);
}
static const struct of_device_id pvpanic_mmio_match[] = {
@@ -123,7 +69,7 @@ static struct platform_driver pvpanic_mmio_driver = {
.name = "pvpanic-mmio",
.of_match_table = pvpanic_mmio_match,
.acpi_match_table = pvpanic_device_ids,
- .dev_groups = pvpanic_mmio_dev_groups,
+ .dev_groups = pvpanic_dev_groups,
},
.probe = pvpanic_mmio_probe,
};
diff --git a/drivers/misc/pvpanic/pvpanic-pci.c b/drivers/misc/pvpanic/pvpanic-pci.c
index 07eddb5ea30f..689af4c28c2a 100644
--- a/drivers/misc/pvpanic/pvpanic-pci.c
+++ b/drivers/misc/pvpanic/pvpanic-pci.c
@@ -22,51 +22,8 @@ MODULE_AUTHOR("Mihai Carabas <mihai.carabas@oracle.com>");
MODULE_DESCRIPTION("pvpanic device driver");
MODULE_LICENSE("GPL");
-static ssize_t capability_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct pvpanic_instance *pi = dev_get_drvdata(dev);
-
- return sysfs_emit(buf, "%x\n", pi->capability);
-}
-static DEVICE_ATTR_RO(capability);
-
-static ssize_t events_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct pvpanic_instance *pi = dev_get_drvdata(dev);
-
- return sysfs_emit(buf, "%x\n", pi->events);
-}
-
-static ssize_t events_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct pvpanic_instance *pi = dev_get_drvdata(dev);
- unsigned int tmp;
- int err;
-
- err = kstrtouint(buf, 16, &tmp);
- if (err)
- return err;
-
- if ((tmp & pi->capability) != tmp)
- return -EINVAL;
-
- pi->events = tmp;
-
- return count;
-}
-static DEVICE_ATTR_RW(events);
-
-static struct attribute *pvpanic_pci_dev_attrs[] = {
- &dev_attr_capability.attr,
- &dev_attr_events.attr,
- NULL
-};
-ATTRIBUTE_GROUPS(pvpanic_pci_dev);
-
static int pvpanic_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
- struct pvpanic_instance *pi;
void __iomem *base;
int ret;
@@ -78,18 +35,7 @@ static int pvpanic_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
if (!base)
return -ENOMEM;
- pi = devm_kmalloc(&pdev->dev, sizeof(*pi), GFP_KERNEL);
- if (!pi)
- return -ENOMEM;
-
- pi->base = base;
- pi->capability = PVPANIC_PANICKED | PVPANIC_CRASH_LOADED;
-
- /* initlize capability by RDPT */
- pi->capability &= ioread8(base);
- pi->events = pi->capability;
-
- return devm_pvpanic_probe(&pdev->dev, pi);
+ return devm_pvpanic_probe(&pdev->dev, base);
}
static const struct pci_device_id pvpanic_pci_id_tbl[] = {
@@ -103,7 +49,7 @@ static struct pci_driver pvpanic_pci_driver = {
.id_table = pvpanic_pci_id_tbl,
.probe = pvpanic_pci_probe,
.driver = {
- .dev_groups = pvpanic_pci_dev_groups,
+ .dev_groups = pvpanic_dev_groups,
},
};
module_pci_driver(pvpanic_pci_driver);
diff --git a/drivers/misc/pvpanic/pvpanic.c b/drivers/misc/pvpanic/pvpanic.c
index 049a12006348..305b367e0ce3 100644
--- a/drivers/misc/pvpanic/pvpanic.c
+++ b/drivers/misc/pvpanic/pvpanic.c
@@ -7,6 +7,7 @@
* Copyright (C) 2021 Oracle.
*/
+#include <linux/device.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/kexec.h>
@@ -26,6 +27,13 @@ MODULE_AUTHOR("Mihai Carabas <mihai.carabas@oracle.com>");
MODULE_DESCRIPTION("pvpanic device driver");
MODULE_LICENSE("GPL");
+struct pvpanic_instance {
+ void __iomem *base;
+ unsigned int capability;
+ unsigned int events;
+ struct list_head list;
+};
+
static struct list_head pvpanic_list;
static spinlock_t pvpanic_lock;
@@ -81,11 +89,75 @@ static void pvpanic_remove(void *param)
spin_unlock(&pvpanic_lock);
}
-int devm_pvpanic_probe(struct device *dev, struct pvpanic_instance *pi)
+static ssize_t capability_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct pvpanic_instance *pi = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%x\n", pi->capability);
+}
+static DEVICE_ATTR_RO(capability);
+
+static ssize_t events_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct pvpanic_instance *pi = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%x\n", pi->events);
+}
+
+static ssize_t events_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct pvpanic_instance *pi = dev_get_drvdata(dev);
+ unsigned int tmp;
+ int err;
+
+ err = kstrtouint(buf, 16, &tmp);
+ if (err)
+ return err;
+
+ if ((tmp & pi->capability) != tmp)
+ return -EINVAL;
+
+ pi->events = tmp;
+
+ return count;
+}
+static DEVICE_ATTR_RW(events);
+
+static struct attribute *pvpanic_dev_attrs[] = {
+ &dev_attr_capability.attr,
+ &dev_attr_events.attr,
+ NULL
+};
+
+static const struct attribute_group pvpanic_dev_group = {
+ .attrs = pvpanic_dev_attrs,
+};
+
+const struct attribute_group *pvpanic_dev_groups[] = {
+ &pvpanic_dev_group,
+ NULL
+};
+EXPORT_SYMBOL_GPL(pvpanic_dev_groups);
+
+int devm_pvpanic_probe(struct device *dev, void __iomem *base)
{
- if (!pi || !pi->base)
+ struct pvpanic_instance *pi;
+
+ if (!base)
return -EINVAL;
+ pi = devm_kmalloc(dev, sizeof(*pi), GFP_KERNEL);
+ if (!pi)
+ return -ENOMEM;
+
+ pi->base = base;
+ pi->capability = PVPANIC_PANICKED | PVPANIC_CRASH_LOADED;
+
+ /* initlize capability by RDPT */
+ pi->capability &= ioread8(base);
+ pi->events = pi->capability;
+
spin_lock(&pvpanic_lock);
list_add(&pi->list, &pvpanic_list);
spin_unlock(&pvpanic_lock);
diff --git a/drivers/misc/pvpanic/pvpanic.h b/drivers/misc/pvpanic/pvpanic.h
index 493545951754..46ffb10438ad 100644
--- a/drivers/misc/pvpanic/pvpanic.h
+++ b/drivers/misc/pvpanic/pvpanic.h
@@ -8,13 +8,7 @@
#ifndef PVPANIC_H_
#define PVPANIC_H_
-struct pvpanic_instance {
- void __iomem *base;
- unsigned int capability;
- unsigned int events;
- struct list_head list;
-};
-
-int devm_pvpanic_probe(struct device *dev, struct pvpanic_instance *pi);
+int devm_pvpanic_probe(struct device *dev, void __iomem *base);
+extern const struct attribute_group *pvpanic_dev_groups[];
#endif /* PVPANIC_H_ */
generated by cgit v1.2.3 (git 2.39.0) at 2024-09-07 16:27:46 +0300